Improvement in furnaces



W.IM. WATSUN'.

Furnaces.

Patented March 31-, 1874.

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ATTORNEYS.

UNITED STATES PATENT OEEIcEe IVILLIAM M. VA'ISON, OF TONIGA, ILLINOIS.

IMPRVEMENT IN FURNACES.

Specification forming part of Letters Patent No. 149,270, dated March31, 1874; application filed February 7, 1874.

To all whom t may concern:

Be it known that I, WILLIAM M. WATSON, of Tonica, in the county of LaSalle and-State of Illinois, have invented a new and aluable Improvementin Furnaces; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure l of the drawing is a representation of a longitudinal section ofmy device. Fig. 2 is a detail view of the same.

This invention has relation to means for prometing combustion of fuel infurnaces generally, and more especially in the furnaces oflocomotive-boilers. The invention consists in a novel arrangement of oneor more steampipes communicating with and arranged in the steam-space ofa steam-generator, which pipe or pipes I provide with regulating-cocks,and terminate them in the furnace by a perforated injector, which is soarranged that the steam will be introduced into the fire to the bestadvantage, as will be hereinafter explained.

The following is a description of my invention:

In the annexed drawing, Fig. l, I have represented my improvementapplied to a locomotive boiler and furnace; but it may be applied tosteam-generators for other purposes where a free combustion of fuel isrequired. A designates the furnace; B, the boiler, and C the smoke-box.I) designates an injector, which is thickly perforated, and suitablyarranged inside of the furnace for the purpose of injecting steam intothe iire.

This injector may extend across the furnace over the front door, asshown, or it may extend entirely around the furnace, and it may be ofany suitable shape.

This injector has attached to it a pipe, E,

which rises to the top of the furnace, and is carried horizontallyforward through the'steamspace of the boiler to and through thefluesheet a. into the smoke-box C. In the smokebox the pipe E is bentaround and carried backward through the fine-sheet a again, so as tocommunicate with the steam-space in the boiler. In the angular portion bof the pipe E I apply a cock, c, to the lever-stem of which a rod, G, isconnected, which is carried back to the engineers station. By meansofthe cock c the engineer can regulate the amount of steam injected intothe iire, or he can entirely cut off the injection.

By reason of having this angular port-ion, I am able to pass the rodoutside of the boiler, (through that portion known as s1nokeboX,) andthereby dispensing with stuffing-boxes for such rod.

The steam which is injected into the fire is dry steam 77 that is tosay, it is subj ccted to a higher temperature than the steam in theboiler by passing through the exposed angular portion of the pipe E inthe smoke-box, and also through that portion of this pipe which isexposed inside of the furnace.

I do not claim, broadly, the introduction of steam into furnaces forpromoting combustion.

Wvhat I claim as new, and desire to secure Steampipes communicating withand arranged in the steam-space of a steam-generator, combined with anangular bend or portion, b, and a perforated injector, D, said bendbeing provided with regulating-cock and rod, as shown and described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses. A

WILLIAM MEDD VATSON.

Witnesses J. S. UNDERHILL, SAMUEL UNDERIIILL.

